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<p>Log session start time Sat Oct 25 00:16:01 CST 2025</p><p></p>

<table cellspacing="0">
<tr class="header">
<td class="Level">Level</td>
<td class="Date">Date</td>
<td class="Message">Message</td>
<td class="MethodOfCaller">MethodOfCaller</td>
<td class="FileOfCaller">FileOfCaller</td>
<td class="LineOfCaller">LineOfCaller</td>
</tr>


<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:01,635</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:02,158</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:02,672</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:02,971</td>
<td class="Message">No route to host: connect</td>
<td class="MethodOfCaller">postBody</td>
<td class="FileOfCaller">XxlJobRemotingUtil.java</td>
<td class="LineOfCaller">139</td>
</tr>
<tr><td class="Exception" colspan="6">java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:81)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.&lt;init&gt;(HttpClient.java:242)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.New(HttpClient.java:339)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.New(HttpClient.java:357)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1226)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1056)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:990)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.xxl.job.core.util.XxlJobRemotingUtil.postBody(XxlJobRemotingUtil.java:95)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.xxl.job.core.biz.client.AdminBizClient.registry(AdminBizClient.java:42)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.xxl.job.core.thread.ExecutorRegistryThread$1.run(ExecutorRegistryThread.java:48)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.Thread.run(Thread.java:748)
</td></tr>
<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-10-25 00:16:02,972</td>
<td class="Message">&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt; xxl-job registry fail, registryParam:RegistryParam{registryGroup=&#39;EXECUTOR&#39;, registryKey=&#39;xxl-job-tax-job&#39;, registryValue=&#39;http://10.63.117.61:9999/&#39;}, registryResult:ReturnT [code=500, msg=xxl-rpc remoting error(No route to host: connect), for url : http://56.0.186.180:7070/xxl-job-admin/api/registry, content=null]</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">ExecutorRegistryThread.java</td>
<td class="LineOfCaller">54</td>
</tr>

<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:03,178</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:03,683</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:04,191</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:04,696</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:05,210</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:05,713</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:06,219</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:06,725</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:07,242</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:07,748</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:08,260</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:08,771</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:09,279</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:09,786</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:10,292</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:10,797</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:11,301</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:11,807</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:12,320</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:12,826</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:13,333</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:13,841</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:14,346</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:14,851</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:15,365</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:15,884</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:16,387</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:16,892</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:17,396</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:17,902</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:18,407</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:18,911</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:19,419</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:19,923</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:20,426</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:20,931</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:21,440</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:21,957</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:22,463</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:22,966</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:23,469</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:23,973</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:24,489</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:24,998</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:25,504</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:26,006</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:26,514</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:27,019</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:27,525</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:28,030</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:28,536</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:29,051</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:29,557</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:30,063</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:30,567</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:31,072</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:31,576</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:32,083</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:32,601</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:32,995</td>
<td class="Message">No route to host: connect</td>
<td class="MethodOfCaller">postBody</td>
<td class="FileOfCaller">XxlJobRemotingUtil.java</td>
<td class="LineOfCaller">139</td>
</tr>
<tr><td class="Exception" colspan="6">java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:81)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.&lt;init&gt;(HttpClient.java:242)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.New(HttpClient.java:339)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.New(HttpClient.java:357)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1226)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1056)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:990)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.xxl.job.core.util.XxlJobRemotingUtil.postBody(XxlJobRemotingUtil.java:95)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.xxl.job.core.biz.client.AdminBizClient.registry(AdminBizClient.java:42)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.xxl.job.core.thread.ExecutorRegistryThread$1.run(ExecutorRegistryThread.java:48)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.Thread.run(Thread.java:748)
</td></tr>
<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-10-25 00:16:32,996</td>
<td class="Message">&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt; xxl-job registry fail, registryParam:RegistryParam{registryGroup=&#39;EXECUTOR&#39;, registryKey=&#39;xxl-job-tax-job&#39;, registryValue=&#39;http://10.63.117.61:9999/&#39;}, registryResult:ReturnT [code=500, msg=xxl-rpc remoting error(No route to host: connect), for url : http://56.0.186.180:7070/xxl-job-admin/api/registry, content=null]</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">ExecutorRegistryThread.java</td>
<td class="LineOfCaller">54</td>
</tr>

<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:33,107</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:33,612</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:34,129</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:34,634</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:35,138</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:35,659</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:36,174</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:36,676</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:37,185</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:37,703</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:38,209</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:38,716</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:39,219</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:39,723</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:40,229</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:40,733</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:41,250</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:41,757</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:42,274</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:42,776</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:43,281</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:43,786</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:44,303</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:44,810</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:45,316</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:45,822</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:46,328</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:46,845</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:47,348</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:47,862</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:48,367</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:48,882</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:49,387</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:49,891</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:50,408</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:50,912</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:51,415</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:51,920</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:52,423</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:52,927</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:53,430</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:53,932</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:54,437</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:54,942</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:55,459</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:55,965</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:56,472</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:56,974</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:57,478</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:57,996</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:58,514</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:59,028</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:16:59,543</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:00,055</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:00,569</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:01,075</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:01,583</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:02,089</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:02,594</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:03,003</td>
<td class="Message">No route to host: connect</td>
<td class="MethodOfCaller">postBody</td>
<td class="FileOfCaller">XxlJobRemotingUtil.java</td>
<td class="LineOfCaller">139</td>
</tr>
<tr><td class="Exception" colspan="6">java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:81)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.&lt;init&gt;(HttpClient.java:242)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.New(HttpClient.java:339)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.http.HttpClient.New(HttpClient.java:357)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1226)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1056)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:990)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.xxl.job.core.util.XxlJobRemotingUtil.postBody(XxlJobRemotingUtil.java:95)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.xxl.job.core.biz.client.AdminBizClient.registry(AdminBizClient.java:42)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.xxl.job.core.thread.ExecutorRegistryThread$1.run(ExecutorRegistryThread.java:48)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.Thread.run(Thread.java:748)
</td></tr>
<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-10-25 00:17:03,004</td>
<td class="Message">&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt; xxl-job registry fail, registryParam:RegistryParam{registryGroup=&#39;EXECUTOR&#39;, registryKey=&#39;xxl-job-tax-job&#39;, registryValue=&#39;http://10.63.117.61:9999/&#39;}, registryResult:ReturnT [code=500, msg=xxl-rpc remoting error(No route to host: connect), for url : http://56.0.186.180:7070/xxl-job-admin/api/registry, content=null]</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">ExecutorRegistryThread.java</td>
<td class="LineOfCaller">54</td>
</tr>

<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:03,100</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:03,605</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:04,110</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:04,614</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:05,118</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:05,621</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:06,138</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:06,656</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:07,161</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:07,665</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:08,180</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:08,683</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:09,189</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:09,695</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:10,228</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-10-25 00:17:10,752</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://113.45.247.83:3309/zhaocai?useSSL=false&amp;serverTimezone=Asia/Shanghai&amp;allowPublicKeyRetrieval=true, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2781</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:787)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:150)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1646)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.GeneratedConstructorAccessor121.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 14 common frames omitted
<br />Caused by: java.net.NoRouteToHostException: No route to host: connect
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:162)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.net.Socket.connect(Socket.java:606)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 17 common frames omitted
</td></tr></table>
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